The Study Of Intellectualized Wood Strength About On-Line Real-Time Lossless The Examination Software System

The natural growth lumber even if the identical tree, often affects the change of quantity on its structure because of the change of growth condition, so this causes that the lumber character of each even the same trees' different position have big differences. All these factors give the plate selection work to bring the certain difficulty. All the lumber has the fine sound vibration performance, the difference of lumber sound vibration performance can the more directly reflect plate intensity difference. The intellectualized wood strength on-line real-time detection line uses Fast Fournier Transformation (FFT) the frequency spectrum based on the attack sound and the plate geometry data to analysis and ensure plate static elasticity coefficient, simultaneously according to the plate static elasticity coefficient carries on the classification to the plate intensity and makes classification marking.The paper mainly aims at the intellectualized wood strength on-line real-time detection line to form a set of numerical control software which consists of surfaces in a friendly way, complete function, easy to operate, strong timeliness, high accurate rate and higher specialization.This article mainly introduces the work flow of plate elasticity coefficient automatic detection line, the gather of plate geometry data, the method of hammerhead orientation, the pick-up of the attack sound's resonance frequency, based on BP Nerve network plate intensity classification algorithm and software overall design. It emphatically introduces the attack sound's the wavelet disappear chirp and the FFT analysis, simultaneously utilizes error reverse dissemination network to establish overall situation mapping relations between input (length, width, height, weight, resonance frequency) and output (static elasticity coefficient), enhances the accuracy of plate classification.The research of plate elasticity coefficient numerical control detection line establishes the foundation for the industrialization production of plate elasticity coefficient examination, it gets rid of the limitation of traditional plate elasticity coefficient examination-sampling examination, and can't destroy the examined plate, realizes the continuous production of wood strength automatic classification, it has the certain promoter action for our country's plate classification technology.